Nut and bolt lock.



J. J. HERRON. NUT AND BOLT LOOK. APPLIOATION 11mm MAY 3,1013.

1ms,755. atented Sept. 23, 1913.

I 4 14L. wrmasses INVENTOR NT @FFICE.

JAMES JOSEPH HERRON, 01? PITTSBURGH, PENNSYLVANIA.

NUT AND BOLT LOOK.

Specification of Letters Patent.

Patented Sept. 23, 1913.

Application and May 2, 1913. semi no. 765,408.

To all whom it may concern:

Be it known that I, JAMES} Josnrn Han- RON, a citizen of the United States oi America, residing at Pittsburgh, in the county of 5 Allegl'ieny and State of Pennsylvania, have invented new and useful IIIIPI'OVOIKIQIItS in Nut and Bolt Locks, oi which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form part of this specifi cation.

' This invention is an improved form "iof locking means, whereby a nut or bolt may,be securely locked against accidpntal displacement or unscrewing, and finds particular adaption in the embodiment oi a device for locking the nut and bolt employed in the connection of the brake chain with the brake stall or similar member in railway 0 equipment. As such a device, it not only aims to provide a lock as above described, but it also afl'ords an additional advantage in that it holds the bolt against longitudinal shifting under the operative stresses and strains of trall'ic, while at the same time providing for ready removal and renewal of the brake chain without necessitating the removal of the brake stali', should the chain become broken. I \Vhile I have shown my invention as embodied in a 'patentableforni of lock, it will be premised that changes will occur to those skilled in the art, which would not be a departure from the invention as defined in the appended claims.

Y I Will now describe my invention, referring to the accompanying c lrawings, so that others skilled in the art to which it appertains may understand and construct the 40 same, it being premised that various changes may be made in the structure shown without departing from my invention.

Figure 1 is a perspective view showing my invention as embodied in a fastening device for the brake chain and stali of railway equipi'nent; Fig. 2 is a vertical sectional view thereof, longitudinally of the bolt;

Fig. 3 is a perspective view oi the locking member; and Fig. 4 is a plan view of the flat plate or sheet from which the member 3 is preferably formed.

The reference numeral 2 indicates a. section of an ordinary brake stail' forming an element of the braking apparatus oil railway equipment. To the staff 2 is usually so-- cured the brake chain 3 leading from the brake beam or shoe of such apparatus, (not shown).

The numeral 4 indicates a bolt passing transversally through the stud and being provided with an ordinary nut 5. This bolt passes through the securing member or link (l of the chain 3, but before application of the bolt, I apply the locking member 7 which comprises a sheet like member 8, preferably formed of sheet metal or plate, and bent or shaped to conform to the curvature of the bralre stail. This member 8 neterably so encircles or'extends arounc the brake staff as to overlie the opening 9 in the brake statt (see Fig. 2), and it is provided at each terminal with the bolt openings or passageways 10 which lie in registry with the bolt opening 9 when said member 8 is in position.

In the application of the device, the member 8 is placed in position and the bolt 4 passes through the member 6 and throu h the brake stall, and is provided with the nut 5, which is then tightened in the usual manner for adjustment or tightening of bolt -11, a tongue 11, carried by one end of the member 8 is bent so as to assume a position preferably flat against the head 12 of the bolt This member or tongue 11 is also preferably of such length as to cause it to overlap the head, as clearly shown in Fig. 1, to prevent longitudinal displacement or accidental withdrawal of the bolt by the nut 5 working loose. and leaving the bolt shank 13. The tongue l 1, may be formed at a suitable point on the member 8., but is preferably positioned so as to pass through the opening 1-1 in the member of the brake chain. The nut 5 is also locked after being applied by means .p'l a similar tongue mom ber 15 which is bent upwardly over the nut 5 as clearly shown in Figs. 1 and 2.

The advantages of my invention will be readily seen in that I provide a locking device which is of a duplex character, although formed in only one piece, and a lock is also provided which absolutely insures locking of the bolt and nut against loosening, thereby grcatly lessening the liability to injury resulting from disconncctingor working loose of parts of the equipment.

Having thus described my invention, what i claim and desire to secure by Letters Patout is:

l. in a inch of the character described, the crnubiiiation. with a bolt and nut, of a sheet 

